Groups

ECE R44 weight groups

Group 0:     Up to 10 kg

Group 0+:   Up to 13 kg

Group 1:      9 – 18 kg

Group 2:     15 – 25 kg

Group 3:     22 – 36 kg

The new regulation R129 i-Size is based on height not weight with two categories: Birth to 105 cms and Booster seats from 100 cms to 150 cms height limit.